Drive mechanism for tractors.



A. R. WHEAT. DRIVE MECHANISM FOR TRACTORS.

APPLICATION FILED OCT. II. 1915. 1,202,935.

Patented Oct. 31, 1916.

2 SHEETS-SHEET I.

I; 'ITNESS.

INVEN TQR.

Mxamkrfl. 71 7290? A. R. WHEAT. DRIVE MECHANISM FOR TRACTORS.

APPLJiIATlOK FILED OCT. 1!, I915- Pa-tented Oct. 31, 1916 2 SHEETS-SHEET 2- INV EN TOR. Aieafiarzderfl. a2

7 B y N I M W l 1 W ORNEY. v k

ALEXANDER 1R3. W11.

Application filed uctober U. 825 I To all whom it may concern Be it known that 1, Annmrssmn it. "i'l i-ruair, a citizen of the United States, residing; nt Stockton, in the county of San Joaquin, State of California, have lll Qlltllll curtain new and useful Improves:cuts in ll'ii i: Mechanism for Tractors; and 1 do declare the following to be :1. clear. lull, and e'r'y description of the scum, reference locinh i to the accompanying drawings, and to th characters of reference mom i t which form a port of this applies? This invention relates to in[:s'urcrm it" power tractors and particuleriy to that class commonly known as platform-i wheel trot tors, the object of the invel'ition being to produce an improved driving mechanism for the tractor which may be able to exert a maximum driving power upon the platform wheels with the minimum expense of power and at the some time be so constructe l and operated as to allow of the ready turning, stopping and braking of the tractor int :in easy and eflicient manner.

A further object of the invention to provide a, major drive wheel for. the plattform Wheel structure whereby ti} int change of parts may readily be made wl'ien the same are worn.

A still. further object of the in'wnizi to produce a simple and incs neie and yet one which wili be exceedin -tive for the purposes for which it do signed.

These objects I accomplislti by means oi. such structure and relative arrm gemcnt of the parts as will fully appeal: by it perusal of the following spocificatioi'i. and claim.

On the drawings similar clmriicters of re? erence indicate corresponding parts in the several views.

Figure 1 is a top plan view, partly bl'UliPll out in section, of my improved structure Fig. 2 is a side elevation of the some Fig: 3 is a rear view of the same.

Referring now more particularity to the characters of reference on the druiwings the numeral 1 designates the main frame of the vehicle provided with the usual. front steering Wheel 2 and motor 3, together with all necessary auxiliary structure to be used in connection therewith.

Disposed near the rear of the frame '1. is a, cross axle 4 pivotslly mounted on each end of which is an auxiliary frame 5, which frames 5 carry the platform wheel structure.

o union j IA N, CALIF 3'EtL liA i iciitcil Oct, 31, 1916.

'lhc numeral 6 designates the driving theft from the motor 3 which is provided n a clutch '1' operating through any suitshlo ililiilil'iii sion mechanism 8 for the purmg: the driven shaft 9 at differhe desired 0n the rear rein: Ft is a. worm gear 10 meshes Will] it pinion 11 turnft fl? iournulctl on 3t frame 12 sn w the rear oi? the frame 011 on T1 is secured a fe- 'cllionul clutch struc- I desired or suitable .ira z c aim being made to the 1h will 0.1 the shaft l2 is it turnable re l t, ash rovided with a sliding colhe ml thereto and operated by means f s suits-ale lever mechanism 16. On each roller L? is 1: mule member 13 engageable with the no; 'Jers 1? to make a frictional UFIHECll-Tfl between the pinion 11. and the shat-res H- whereliiy e'ch or both may be driven with the octiisi of the "pinion 1.1.

in the outer ends =1 tlw sleeves 14 are sproclo' ls i? room b? "hizins 18 with sprockets ii? on 21' suititblv jourlulml in 1 "R mmed on the main irunw w? shaft 20 is it ms engage interthe drive wheels h fol H Ti secured t-s -'i "f {in endless plzifiorin wheel structure 2: The. saml'pimone 33 111i: reinovnblv secured he the drive wheels Ell luv means of i,-lli.i\ 2lllil extending flanges Qt; reniovublv Smitmi hy limits 2'? l the said wheels 24 so :1 when wear occurs the said pinions 23 me.) he rmdily' taken of! :Hlil replaced. The ndies: platform whorl structure 25 is inde pendent invention and has been filed upon Hsjlnroixi) ii) me, heme no detailed descripilun o! the some is here entered into, this ir 'vrniinn relating solely to the drive mechanmm.

"l'hc lever Incchunisn'i 16 can be readily operated by levers 16 mounted near the. driver seat 16" and also by means of another similar lever and connection 7* the clutch 7 may be operated to connect or disconnect the drive of the engine, and by :1. still further level. l3 and its coimections, the transmission mechanism. 8 may he operated in the usual manner:

The advantages claimed for my particultil" form of drive mechanism, are: that-a verypowerful drive can be delivered to the platform wheels, and at the same time, by the use of the independent clutches 13-13, one platform wheel or the other may be turned alone thus allowing of an ease in turning the tractor in one direction or the other.- Furtheiyby the specific arrangement of the drive ,means on the elevated supporting structure, a neat and compact form of drive is provided, while the intermediate a of the device, still in practice, such deviationsfroni such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claim.

Having thus described my invention what I claim as new and useful and desire to secure by Letters Patent is:

A drive mechanism for a tractor comprisingthe combination with a tractor having a motor and a driven shaft, of a worm gear on the" driven shaft, another shaft, a pinion turnable on said shaft and engageablewith the worm gear, a pair of friction clutch members secured to said pinion, a pair of sleeves turnable on said last named shaft and having a sliding clutch mechanism for engagement with the clutch members on the pinion, a gear on each sleeve, a pair of shafts, a gear on each shaft, meansconnectin'g each of said gears with one of.the gears on said sleeves, a pinion on each of the last named shafts, pinions on the drive wheels of the tractor, said last named pinions engageable with the pinions on said drive wheels, as described.

' In testimony whereofI aflix my signature,

ALEXANDER It. WHEAT. 

